As an experimental hydrologist, I aim to provide accurate and reliable data to solve societal water-related challenges. As plastic pollution of aquatic ecosystems is an emerging hazard, my ambition is therefore to develop river plastic monitoring techniques that can be applied to (1) quantify plastic pollution any river around the world, and (2) optimize plastic pollution prevention and reduction strategies. A holistic approach is key, as rivers, societies and their interconnections vary greatly around the world. River plastic pollution is a complex problem that crosses spatiotemporal scales. My research therefore focuses on developing methods that can be applied at both the field scale (single rivers) and global scale (continental assessments).